Deep Face II Flashcards
Features that make up the bony part of the nose
Nasal bonesFrontal process of maxillaNasal part of frontal bone and nasal spineBony part of nasal septum
Cartilagenous part of nose
2 lateral cartilages2 alar cartilagesSeptal cartilage (nasal septum)
All of the nasal cavity is lined with nasal mucosa except _____
vestibule of nose (considered an external portion)
Nasal mucosa is firmly connected to the ____ of the bony parts of the nasal cavity and the ____ of the cartilagenous nasal components
periosteumperichondrium
The areas lined with nasal mucosa constitute the ____ and the _____
respiratory area (inferior 2/3)olfactory area (superior 1/3)
The olfactory area has specialized nasal mucosa that contains the peripheral nerve endings from the ____ nerve for ____ ____ ____
olfactory nerve (CN I)special sense olfaction (smell)
Boundaries of the nasal cavityRoofFloorMedial wallLateral wall
Roof: frontal bone, ethmoid bone, sphenoid boneFloor: palatine process of maxilla, horizontal plate of palatine boneMedial wall: nasal septum (perpendicular plate of ethmoid, vomer, septal cartilage, nasal crest of maxillary and palatine bones)Lateral wall: superior, middle and inferior nasal conchae
Nasal conchae: What are the four passages that the nasal cavity can be divided into?
- Spheno-ethmoidal recess2. superior nasal meatus3. middle nasal meatus4. inferior nasal meatus
Where does the sphenoehtmoidal recess drain into?
opening of sphenoid sinus
where does the superior nasal meatus drain into?
openings of ethmoidal sinus
Where does the middle nasal meatus drain into?
opening of frontal sinusmaxillary sinus also opens into middle nasal meatus in posterior part of semilunar hiatus at the maxillary ostium (below ethmoid bulla)
Where does the inferior nasal meatus drain into?
opening of nasolacrimal duct
What is the arterial supply to the nasal cavity?
Most blood is supplied to lateral and medial walls of nasal cavity from branches of the maxillary artery (spenopalatine a, anterior and posterior ethmoidal a, greater palatine a) BUT also from the facial artery (superior labial a, lateral nasal branches)
What is the venous drainage from the nasal cavity?
venous drainageto spenopalatine, facial and opthalmic veins
What is the kiesselbach area?
It is the region where all five arteries come together in a capillary bed that can bleed profusely
What is the kiesselbach area?
It is the region where all five arteries (spenopalatine a, anterior & posterior ethmoidal a, greater palatine a, superior labial a, lateral nasal branches) come together in a capillary bed that can bleed profusely
Innervation of the nasal cavity
opthalmic division of trigeminal n (CN V1) and the maxillary division of trigeminal n (CN V2)
Nerve supply to the posterior 2/3 of the nasal cavity from ___ via the ____ and ____
V2 via nasopalatine n (nasal septum) and greater palatine n (lateral wall)
Nerve supply to anteriosuperior nasal mucosa of septum & lateral wall is from ___ via the _____
V1 via anterior ethmoidal nerves
- What are paranasal sinuses?2. Where are they found?3. What are paranasal sinuses lined with?4. Where do they drain into?
- Air-filled extensions of the respiratory portion of nasal cavity2. Found in frontal, ethmoid, sphenoid, & maxillary bones of face3. Lined with nasal mucosa4. Drain into nasal cavity via openings in the spheno-ethmoidal recess, and superior, middle & inferior meatuses
- Maxillary sinuses arterial supply and innervation?2. How does it drain?3. What makes it unique?
- Arterial supply=superior alveolar branches of maxillary a,& greater palatine a; innervation=superior alveolar n branches2. Drainage via maxillary ostium into middle meatus3. Largest paranasal sinus
- Ethmoid sinus arterial supply and innervation2. Drainage3. Misc.
- blood supply: anterior and posterior ethmoid & sphenopalatine ainnervation: nasocilliary nerves (CN V1)2. Drainage: ant & middle ethmoidal cells drain into middle meatuspost ethmoidal cells drain into middle meatus3. ethmoid air cells located between orbits
- Sphnoid sinus arterial supply and innervation2. Drainage3. Misc
- posterior ethmoidal a, posterior ethmoidal n2. Drainage via spheno-ethmoidal recess3. unevenly divided by bony part of nasal septum
- Frontal sinus arterial supply and innervation2. Drainage3. Misc
- supraorbital a & anterior ethmoidal aa; supraorbital n (V1)2. Drains via frontonasal duct into semilunar hiatus of middle meatus3. bw outer & inner tables of frontal bone, posterior to supercilliary arches
- The ear consists of external, middle and internal portions. The ___ and ____ ear transfer sound to the internal ear2. The external ear captures and funnels acoustic signals through the ____ to the middle ear which contains a complex of small bones (ossicles) that then transmit sound vibrations to the inner ear where the organs of hearing and equilibrium are found
- external and middle2. tympanic membrane
The middle ear is found within the ____ part of the temporal boneIT is located behind the _____It connects to _____ via ____It is lined with ___ ___
petrousTympanic membrane (ear drum)nasopharynx via pharyngotympanic tube (Eustachian Tube)mucous membrane
Conents of the middle ear
auditory ossicles: malleus, incus, stapesstapedius and tensor tympani muscleschorda tympani n (taste to ant/. 2/3 of tongue from CN VII)tympanic plexus of nerves
Boundaries (walls) of the middle earRoofFloorLateral MedialAnteriorPosterior
Roof: tegmental wall (temporal bone=tegman tympani)Floor: jugular wallLateral: membranous wall (tympanic membrane)Medial: Labrynthine wall (choclea, oval & round windows)Anterior: carotid wall (internal carotid a)posterior: mastoid wall (opening to mastoid antrum)
A mobile chain of tiny bones that articulate with each other and transmit sound vibrations=?
Middle ear auditory ossicles
A mobile chain of tiny bones that articulate with each other and transmit sound vibrations=?
Middle ear auditory ossicles
The middle ear auditory ossicles span between the ____ to ____
tympanic membrane (from external ear and oval window) to the inner ear
Flow of sound through the ear
tympanic membrane–>malleus–>incus–>stapes (oval window)
What muscle moves the stapes? What inserts on malleus?
Stepedius moves stapestensor tympani inserts on malleus
Internal ear contains the ____ organ and is buried deep within petrous part of temporal bone within otic capsule (hardest part of this bone)InnervationThree parts of the inner ear=?
vestibulocochlear organ (hearing and equilibrium)recieves vestibulocochlear n (CN VIII) via internal acoustic meatusThree parts=cochlea, vestibule, semicircular canals
shell shaped part of bony labyrinth containing cochlear duct, concerned with hearing=?
cochlea
small oval chamber containing urticle & saccules; vestibular labyrinth for balance=?
vestibule
communicate with vestibule; also for balance=?
semicircular canals
A narrow canal within the petrous part of the temporal bone that transmits the facial n (CN VII) and vestibulocochlear n (CN VIII) and blood vessels through to internal ear=?
Internal acoustic meatus
Deep face 1: what are the structures in the infratemporal fossa?
Contents: Inferior portion of temporalis muscle Lateral and medial pterygoid muscles Maxillary artery Pterygoid venous plexus Nervous structures: Inferior alveolar v3, Lingual v3, buccal v3, chorda tympani VII, otic ganglion
Boundaries of infratemporal fossa
Lateral: Ramus of mandible Anterior: Maxilla Medial: Lateral pterygoid plate Roof: Sphenoid Posterior: Tympanic plate and mastoid and styloid processes Inferior: Angle of mandible
